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Exchange 2010, migrate mailboxes from origin forest to resource forest. RRS feed

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    Scenario:

    Forest A is an AD with Exchange 2010 residing accounts and mailboxes
    Forest B is an new (resource forest) AD with Exchange 2010

    They belong to the same company and should have the same mail accepted domains, the company want to move the mailboxes from Forest A to Forest B, how can this be done and how can the two Exchange installations interact?

    Best regards

    SwedUser

    Wednesday, May 22, 2013 1:57 PM

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    The simplest way I've used is to do the following steps:

    1. Keep both as authoritative for the primary SMTP address space
    2. Create a new address space in Forest A for Forest B mailboxes and vice versa - for example, "oldmail.company.com" and "newmail.company.com" (including adding them as accepted domains)
    3. Set the old forest as authoritative for oldmail and the new as authoritative for newmail
    4. Add the oldmail addresses as a secondary proxy to the mailboxes in the old forest, and newmail to the new
    5. Add contacts in Forest A for Forest B mailboxes and vice-versa
    6. Configure a send connector in each forest to send mail with the other forests' new address space directly to the other forest

    Once you have this all configured, you should be able to send emails successfully between mailboxes in the two forests.



    • Proposed as answer by Zi Feng Thursday, May 23, 2013 7:59 AM
    • Marked as answer by Zi Feng Tuesday, May 28, 2013 2:47 AM
    • Edited by Will Martin, PFE Tuesday, February 17, 2015 7:08 PM
    Wednesday, May 22, 2013 2:51 PM

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  • Question
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    The simplest way I've used is to do the following steps:

    1. Keep both as authoritative for the primary SMTP address space
    2. Create a new address space in Forest A for Forest B mailboxes and vice versa - for example, "oldmail.company.com" and "newmail.company.com" (including adding them as accepted domains)
    3. Set the old forest as authoritative for oldmail and the new as authoritative for newmail
    4. Add the oldmail addresses as a secondary proxy to the mailboxes in the old forest, and newmail to the new
    5. Add contacts in Forest A for Forest B mailboxes and vice-versa
    6. Configure a send connector in each forest to send mail with the other forests' new address space directly to the other forest

    Once you have this all configured, you should be able to send emails successfully between mailboxes in the two forests.



    • Proposed as answer by Zi Feng Thursday, May 23, 2013 7:59 AM
    • Marked as answer by Zi Feng Tuesday, May 28, 2013 2:47 AM
    • Edited by Will Martin, PFE Tuesday, February 17, 2015 7:08 PM
    Wednesday, May 22, 2013 2:51 PM
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    Thanx Willard!
    Thursday, May 23, 2013 6:28 AM
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    Hi

    If the post is helpful, please Mark as Answer

    Cheers

    Zi Feng
    TechNet Community Support

    Thursday, May 23, 2013 7:59 AM